Minnesota Mining and Manufacturing Company

John A Bailey

Glenn A Bloomer

Donald J Staufenberg

Gregory H Johnson

Mark J Ciesko

Nicholas A Brawne

Kenton D Budd

Tai T Tran

Robert L Hanson

A process for producing a tungsten oxide precursor solution that includes converting a peroxypolytungstate solution to a stable oxide polytungstate solution. The precursor solution may subsequently be transformed to tungsten oxide having electrochromic properties.

Process for producing tungsten oxide

Window and label area of a top surface for a videocassette

Window, label and rear area of a top surface for a videocassette

Videocassette

Tape reel for a videocassette

Tape reel for a video cassette

The recording latch is pivotably mountable in a recording cassette between a record position and a no-record position. A plug at the bottom of the latch selectively blocks the record opening in the bottom wall of the cassette, and a flange at the top of the latch is selectively visible through the latch-engaging opening in the top wall. Two tabs are mounted on the flange, and the top wall of the cassette includes a record groove and a no-record groove. The tabs engage the record groove when the cassette can be used in the record mode and the tab engages the no-record groove when the cassette can not be used in the record mode. This engagement system is located entirely on the flange of the recording latch.

Recording latch

Growing community of inventors

Woodbury, MN, United States of America

John A Bailey